Latch



A. DIDION. LATCH (ModeL) Patented Feb. 2

lUNlTFD Sterne Parent @rrrcn.

AUGUSTE DIDION, OF CHICAGO, ILLINOIS,

LATCH.

SPECIFICATION forming part of Letters Patent No. 468,040, dated February2, 1892.

Application filed May 28, 1891. Serial No. 394.341. (ModeL) To all whomit may concern:

Be it known that I, AUGUSTE DIDION, a citizen of the Unit-ed States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Door-Locks, of which thefollowing is a specification.

My invention relates to improvements .in door-locks, more particularlyto that species of door-locks which are known as catchlocks; and theobject is to provide a construction by which engagement between the boltand catch may be rendered at all times certain and secure, and isparticularly directed to a construction by which the tendency to recoilwhen the door is closed with gigor shall not be permitted to reopen theoor.

My invention consists in detail of a doorlock comprising ahorizontally-arranged bolt cap ble of revolving under the operation of ahandle and having an angular part caused to protrude from the edge ofthe door, and a catch located upon the jainb comprising spring-actuatedjaws capable of opening to receive the bolt and held together by thesprings until they are separated by the revolution of the bolt on itsaxis.

My invention. further consists in the general and specific details ofconstruction, all as hereinafter more fully pointed out.

In the drawings, Figure 1 is a,sectional front elevation of thebolt-section of the lock, with the top plate removed to show theinterior construction. Fig. 2 is a cross-sectional end elevation on theline 2 of Fig. 1, viewed in the direction of the arrow. Fig. 3 is an endview of the bolt. Fig. 4 is a front elevation of the bolt-section of thelock, showing the location of the handle; and Fig. 5, a detail view inelevation of the catch-section of the lock or that carried by the jamb.

A represents the case adapted to be screwed upon the door and carryingthe revolving bolt 13. The bolt B is supported in bearings .C to'revolve therein, as shown, and the projecting end if is made triangularin end elevation, as indicated in Fig. A coiled spring D surrounds thebolt to return it to its normal position after it has been revolvedunder.

the operation of the handle E, as presently shown. From a suitable pointupon the bolt extends'the jointed arm F, the opposite end of which issecured to a link G, extending through the stem II of the handle E. Thearrangement of the parts is such that when the handle E is turned thebolt B is given a partial revolution, so as to present one of the anglest to the front of the look, while when the handle is released the boltunder the action of the spring D will return to its normal position topresent one of the sides 8 to the front of the lock. The catch isinclosed in a metal shell I, bolted to the door-jamb, within which aremounted the oppositely-ar ranged pivoted jaws K, held together, asindicated in Fig. 5, by fiat springs L. The interior faces of the jaws Kpresent an angular space similar in outline to the projecting end 25 ofthe bolt B.

A tumbler of common construction is provided within the case A for thepurpose of locking the bolt B to prevent its revolution under theoperation of the handle. A simple form for this construction isillustrated in Fig. 1, in which the bolt B is represented in dottedlines as recessed at r, and a sliding spring-retained tumbler M ismounted in hearings to extend at right angles to the bolt. At 1) isrepresented a recess for the end of an ordinary door-key, the tang ofwhich may engage the wards 0 on the tumbler M to withdraw the sameagainst the resistance of the spring on. v

The operation is as follows: By reason of the configuration given to theouter extremities of the jaws K on the closing of the door the edge ifenters within the jaws, so that the hypotenusal side .9 is presented tothe inner face of the jaw-teeth. To open the lock, the handle is turnedto turn thebolt, whereupon the broader part of the bolt becomespresented to the inner narrow part of the jaws of the catch, serving toseparate them and .permit the withdrawal of the bolt between the ja'w-teeth.

Any convenient or suitable means may be adopted for turning the bolt 13to withdraw it from the jaws without longitudinal displacement, and anyconvenient form of locking shown without departing from the'scope of myinvention.

That I claim as new, and desire to secure by Letters Patent, is

1. In a door-lock, the revolving bolt having the projecting angular end,said end being normally in position tocause one of its angular edges tobe presented to the catch, in combination with a catch adapted toreceivethe bolt and .be released therefrom by turning the bolt, substantiallyasdescribed.

2. In a door-lock, in combination, the re 'volving bolt held againstlongitudinal displacement and having the angular projecting end,and acatch comprising pivoted jaws to receive the bolt and adapted tobeopened to release the bolt by turning the latter, substantially asdescribed.

3. In a door-loek,in combination,the springcontrolled revolving boltheld against longitudinal displacement and having the angular projectingend, and the catch adapted to receive the bolt and be opened by itsrevolution to release the same, comprising springcontrolled pivotedjaws, substantially as described.

4. In a door-lock, in combination, the re-' volving bolt B, held againstlongitudinal displacement and having the triangular projecting end 2.,and a catch to receive and hold the projecting end on the closing of thedoor, comprising oppositely-arranged pivoted jaws K, presenting aninterior configuration like" that of the end 15, substantially asdescribed.

5. A door-lockv comprising, in combination, the following elements: thebolt B, held against longitudinal displacement and having the triangularprojecting end 15, the handle for operating said bolt, a tumbler toengage said bolt, said parts being mounted on the door, and acatchlocated on the j amb and comprising spring-controlled co-operatingjaws presenting theinterior triangular space, substantially as and forthe purpose described. I

AUGUS'IE DIDION. In presence of FRANK WIL'rsHIRE, DOUGLAS DYRENFORTII.

